IHO's transfer standard for digital hydrographic data for use with ECDIS



Related Terms

ACOUSTIC COUPLER

A device used between the modem of a computer terminal and a standard telephone line to permit transmission of digital data in either direction without making direct connections.

ELECTRONIC CHART DATA BASE

The master electronic chart data base for the electronic navigation chart held in digital form by the hydrographic authority.

UCP

Abbreviation for the 'Uniform Customs and Practice for Documentary Credits,' published by the International Chamber of Commerce. This is the most frequently used standard for making payments in international trade; e.g., paying on a Letter of Credit. It is most frequently referred to by its shorthand title: UCP No. 500. This revised publication re ects recent changes in the transportation and banking industries, such as electronic transfer of funds.

D.S.C.

1) Digital Selective Calling system using digital codes which enables a radio station to establish contact with, and transfer information to, another station or group of stations. 2) Dangerous goods, solid cargoes and containers.

DSC

Digital Selective Calling a technique using digital codes which enable a radio station to establish contact with, and transfer information to, another station or group of stations

BUILDING-BLOCK APPROACH

A technique for development of a set of standard data by creating fixed groups or modules of work elements that may be added together to obtain time values for elements and entire operations.

ECDB

The master electronic chart data base for the electronic navigation chart held in digital form by the hydrographic authority.

SENC

System Electronic Navigational Chart a database that comprises ENC data, ENC updates and other data added by the mariner that is accessed by, and displayed on, the ECDIS

BAROMETRIC PRESSURE CORRECTION

A correction due to nonstandard baro- metric pressure, particularly the sextant altitude correction due to changes in refraction caused by difference between the actual baro- metric pressure and the standard barometric pressure used in the computation of the refraction table.

VAN ALLEN RADIATION BELTS

Popular term for regions of high energy charged particles trapped in the earth’s magnetic field. Definition of size and shape of these belts depends on selection of an arbitrary standard of radiation intensity and the predominant particle component. Belts known to exist are: a proton region centered at about 2,000 miles altitude at the geomagnetic equator; an electron region centered at about 12,000 miles altitude at the geomagnetic equator; overlapping electron and proton regions centered at about 20,000 miles altitude at the geomagnetic equator. Trapped radiation regions from artificial sources also exist. These belts were first reported by Dr. James A. Van Allen of Iowa State University.

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